Also you didn't address what he said, possibly because it's complete nonsense?
> A lot of rich people just buy shares (other than at an IPO) and just move money around each other's pockets rather than investing in something wealth creating, or just swap already-existing overpriced properties around each other.
Acquire it from other people. That's how I do it; my day job pays me less money than me just swapping stocks around. The companies whose stock I buy and sell have never seen a penny from me; never received from me a single penny of investment in their business. I harvest wealth without having ever invested in any company and my actions create no new wealth; I harvest wealth I did not create.
I mean, there are a bunch of direct mechanisms for that, from the legal (preferred stock classes), through the grey (letting your buddies invest pre-IPO), to the less-legal (insider trading)
Sitting on a bunch of real estate in a desirable location like NYC isn't a bad mechanism either.